He says Kravchuk proposed a full ceasefire be re-imposed from 00:00 a.m. local time on April 1.
Spokesman for the Ukrainian delegation to the Trilateral Contact Group (TCG) Oleksiy Arestovych is convinced a meeting of political advisers may help unblock talks with Russia on a full, comprehensive ceasefire in Donbas.
The official claims the members of the Normandy Four, including Russia, have confirmed that political advisers' consultations will continue under any conditions.
"And today [March 31], the Russian Federation actually rejected two proposals at the same time," he told Ukraina 24 TV channel.
Read alsoTCG talks: Russia turns down offer to secure truce in Donbas from April 1
"The Russian Federation refused point-blank: 'No.' They said the existing agreements are enough, and they do not require any decisions. I think we will be able to resolve this deadlock at the level of political advisers," Arestovych added.